diff options
Diffstat (limited to 'system/core')
| -rw-r--r-- | system/core/Benchmark.php | 4 | ||||
| -rw-r--r-- | system/core/CodeIgniter.php | 104 | ||||
| -rw-r--r-- | system/core/Common.php | 136 | ||||
| -rw-r--r-- | system/core/Config.php | 61 | ||||
| -rw-r--r-- | system/core/Controller.php | 9 | ||||
| -rw-r--r-- | system/core/Exceptions.php | 10 | ||||
| -rw-r--r-- | system/core/Hooks.php | 12 | ||||
| -rw-r--r-- | system/core/Input.php | 40 | ||||
| -rw-r--r-- | system/core/Lang.php | 19 | ||||
| -rw-r--r-- | system/core/Loader.php | 301 | ||||
| -rw-r--r-- | system/core/Model.php | 2 | ||||
| -rw-r--r-- | system/core/Output.php | 38 | ||||
| -rw-r--r-- | system/core/Router.php | 40 | ||||
| -rw-r--r-- | system/core/Security.php | 832 | ||||
| -rw-r--r-- | system/core/URI.php | 77 | ||||
| -rw-r--r-- | system/core/Utf8.php | 4 |
16 files changed, 1327 insertions, 362 deletions
diff --git a/system/core/Benchmark.php b/system/core/Benchmark.php index 515550e9f..3686c2d73 100644 --- a/system/core/Benchmark.php +++ b/system/core/Benchmark.php @@ -1,4 +1,4 @@ -<?php if ( ! defined('BASEPATH')) exit('No direct script access allowed'); +<?php if ( ! defined('BASEPATH')) exit('No direct script access allowed'); /** * CodeIgniter * @@ -19,7 +19,7 @@ * CodeIgniter Benchmark Class * * This class enables you to mark points and calculate the time difference - * between them. Memory consumption can also be displayed. + * between them. Memory consumption can also be displayed. * * @package CodeIgniter * @subpackage Libraries diff --git a/system/core/CodeIgniter.php b/system/core/CodeIgniter.php index 99c261e74..b6f5e872c 100644 --- a/system/core/CodeIgniter.php +++ b/system/core/CodeIgniter.php @@ -1,4 +1,4 @@ -<?php if ( ! defined('BASEPATH')) exit('No direct script access allowed'); +<?php if ( ! defined('BASEPATH')) exit('No direct script access allowed'); /** * CodeIgniter * @@ -29,35 +29,42 @@ /* * ------------------------------------------------------ - * Define the CodeIgniter Version + * Define the CodeIgniter Version * ------------------------------------------------------ */ - define('CI_VERSION', '2.0.1'); + define('CI_VERSION', '2.0.2'); /* * ------------------------------------------------------ - * Define the CodeIgniter Branch (Core = TRUE, Reactor = FALSE) + * Define the CodeIgniter Branch (Core = TRUE, Reactor = FALSE) * ------------------------------------------------------ */ define('CI_CORE', FALSE); /* * ------------------------------------------------------ - * Load the global functions + * Load the global functions * ------------------------------------------------------ */ - require(BASEPATH.'core/Common'.EXT); + require(BASEPATH.'core/Common.php'); /* * ------------------------------------------------------ - * Load the framework constants + * Load the framework constants * ------------------------------------------------------ */ - require(APPPATH.'config/constants'.EXT); + if (defined('ENVIRONMENT') AND file_exists(APPPATH.'config/'.ENVIRONMENT.'/constants.php')) + { + require(APPPATH.'config/'.ENVIRONMENT.'/constants.php'); + } + else + { + require(APPPATH.'config/constants.php'); + } /* * ------------------------------------------------------ - * Define a custom error handler so we can log PHP errors + * Define a custom error handler so we can log PHP errors * ------------------------------------------------------ */ set_error_handler('_exception_handler'); @@ -69,7 +76,7 @@ /* * ------------------------------------------------------ - * Set the subclass_prefix + * Set the subclass_prefix * ------------------------------------------------------ * * Normally the "subclass_prefix" is set in the config file. @@ -78,7 +85,7 @@ * "libraries" folder. Since CI allows config items to be * overriden via data set in the main index. php file, * before proceeding we need to know if a subclass_prefix - * override exists. If so, we will set this value now, + * override exists. If so, we will set this value now, * before any classes are loaded * Note: Since the config file data is cached it doesn't * hurt to load it here. @@ -90,7 +97,7 @@ /* * ------------------------------------------------------ - * Set a liberal script execution time limit + * Set a liberal script execution time limit * ------------------------------------------------------ */ if (function_exists("set_time_limit") == TRUE AND @ini_get("safe_mode") == 0) @@ -100,7 +107,7 @@ /* * ------------------------------------------------------ - * Start the timer... tick tock tick tock... + * Start the timer... tick tock tick tock... * ------------------------------------------------------ */ $BM =& load_class('Benchmark', 'core'); @@ -109,21 +116,21 @@ /* * ------------------------------------------------------ - * Instantiate the hooks class + * Instantiate the hooks class * ------------------------------------------------------ */ $EXT =& load_class('Hooks', 'core'); /* * ------------------------------------------------------ - * Is there a "pre_system" hook? + * Is there a "pre_system" hook? * ------------------------------------------------------ */ $EXT->_call_hook('pre_system'); /* * ------------------------------------------------------ - * Instantiate the config class + * Instantiate the config class * ------------------------------------------------------ */ $CFG =& load_class('Config', 'core'); @@ -136,7 +143,7 @@ /* * ------------------------------------------------------ - * Instantiate the UTF-8 class + * Instantiate the UTF-8 class * ------------------------------------------------------ * * Note: Order here is rather important as the UTF-8 @@ -150,14 +157,14 @@ /* * ------------------------------------------------------ - * Instantiate the URI class + * Instantiate the URI class * ------------------------------------------------------ */ $URI =& load_class('URI', 'core'); /* * ------------------------------------------------------ - * Instantiate the routing class and set the routing + * Instantiate the routing class and set the routing * ------------------------------------------------------ */ $RTR =& load_class('Router', 'core'); @@ -171,14 +178,14 @@ /* * ------------------------------------------------------ - * Instantiate the output class + * Instantiate the output class * ------------------------------------------------------ */ $OUT =& load_class('Output', 'core'); /* * ------------------------------------------------------ - * Is there a valid cache file? If so, we're done... + * Is there a valid cache file? If so, we're done... * ------------------------------------------------------ */ if ($EXT->_call_hook('cache_override') === FALSE) @@ -190,27 +197,34 @@ } /* + * ----------------------------------------------------- + * Load the security class for xss and csrf support + * ----------------------------------------------------- + */ + $SEC =& load_class('Security', 'core'); + +/* * ------------------------------------------------------ - * Load the Input class and sanitize globals + * Load the Input class and sanitize globals * ------------------------------------------------------ */ $IN =& load_class('Input', 'core'); /* * ------------------------------------------------------ - * Load the Language class + * Load the Language class * ------------------------------------------------------ */ $LANG =& load_class('Lang', 'core'); /* * ------------------------------------------------------ - * Load the app controller and local controller + * Load the app controller and local controller * ------------------------------------------------------ * */ // Load the base controller class - require BASEPATH.'core/Controller'.EXT; + require BASEPATH.'core/Controller.php'; function &get_instance() { @@ -218,34 +232,34 @@ } - if (file_exists(APPPATH.'core/'.$CFG->config['subclass_prefix'].'Controller'.EXT)) + if (file_exists(APPPATH.'core/'.$CFG->config['subclass_prefix'].'Controller.php')) { - require APPPATH.'core/'.$CFG->config['subclass_prefix'].'Controller'.EXT; + require APPPATH.'core/'.$CFG->config['subclass_prefix'].'Controller.php'; } // Load the local application controller // Note: The Router class automatically validates the controller path using the router->_validate_request(). // If this include fails it means that the default controller in the Routes.php file is not resolving to something valid. - if ( ! file_exists(APPPATH.'controllers/'.$RTR->fetch_directory().$RTR->fetch_class().EXT)) + if ( ! file_exists(APPPATH.'controllers/'.$RTR->fetch_directory().$RTR->fetch_class().'.php')) { show_error('Unable to load your default controller. Please make sure the controller specified in your Routes.php file is valid.'); } - include(APPPATH.'controllers/'.$RTR->fetch_directory().$RTR->fetch_class().EXT); + include(APPPATH.'controllers/'.$RTR->fetch_directory().$RTR->fetch_class().'.php'); // Set a mark point for benchmarking $BM->mark('loading_time:_base_classes_end'); /* * ------------------------------------------------------ - * Security check + * Security check * ------------------------------------------------------ * - * None of the functions in the app controller or the - * loader class can be called via the URI, nor can - * controller functions that begin with an underscore + * None of the functions in the app controller or the + * loader class can be called via the URI, nor can + * controller functions that begin with an underscore */ - $class = $RTR->fetch_class(); + $class = $RTR->fetch_class(); $method = $RTR->fetch_method(); if ( ! class_exists($class) @@ -258,14 +272,14 @@ /* * ------------------------------------------------------ - * Is there a "pre_controller" hook? + * Is there a "pre_controller" hook? * ------------------------------------------------------ */ $EXT->_call_hook('pre_controller'); /* * ------------------------------------------------------ - * Instantiate the requested controller + * Instantiate the requested controller * ------------------------------------------------------ */ // Mark a start point so we can benchmark the controller @@ -275,14 +289,14 @@ /* * ------------------------------------------------------ - * Is there a "post_controller_constructor" hook? + * Is there a "post_controller_constructor" hook? * ------------------------------------------------------ */ $EXT->_call_hook('post_controller_constructor'); /* * ------------------------------------------------------ - * Call the requested method + * Call the requested method * ------------------------------------------------------ */ // Is there a "remap" function? If so, we call it instead @@ -304,12 +318,12 @@ $method = (isset($x[1]) ? $x[1] : 'index'); if ( ! class_exists($class)) { - if ( ! file_exists(APPPATH.'controllers/'.$class.EXT)) + if ( ! file_exists(APPPATH.'controllers/'.$class.'.php')) { show_404("{$class}/{$method}"); } - include_once(APPPATH.'controllers/'.$class.EXT); + include_once(APPPATH.'controllers/'.$class.'.php'); unset($CI); $CI = new $class(); } @@ -331,14 +345,14 @@ /* * ------------------------------------------------------ - * Is there a "post_controller" hook? + * Is there a "post_controller" hook? * ------------------------------------------------------ */ $EXT->_call_hook('post_controller'); /* * ------------------------------------------------------ - * Send the final rendered output to the browser + * Send the final rendered output to the browser * ------------------------------------------------------ */ if ($EXT->_call_hook('display_override') === FALSE) @@ -348,14 +362,14 @@ /* * ------------------------------------------------------ - * Is there a "post_system" hook? + * Is there a "post_system" hook? * ------------------------------------------------------ */ $EXT->_call_hook('post_system'); /* * ------------------------------------------------------ - * Close the DB connection if one exists + * Close the DB connection if one exists * ------------------------------------------------------ */ if (class_exists('CI_DB') AND isset($CI->db)) @@ -365,4 +379,4 @@ /* End of file CodeIgniter.php */ -/* Location: ./system/core/CodeIgniter.php */ +/* Location: ./system/core/CodeIgniter.php */
\ No newline at end of file diff --git a/system/core/Common.php b/system/core/Common.php index cd6b93355..e50f7794a 100644 --- a/system/core/Common.php +++ b/system/core/Common.php @@ -1,4 +1,4 @@ -<?php if ( ! defined('BASEPATH')) exit('No direct script access allowed'); +<?php if ( ! defined('BASEPATH')) exit('No direct script access allowed'); /** * CodeIgniter * @@ -39,6 +39,8 @@ * @param string * @return bool TRUE if the current version is $version or higher */ +if ( ! function_exists('is_php')) +{ function is_php($version = '5.0.0') { static $_is_php; @@ -51,6 +53,7 @@ return $_is_php[$version]; } +} // ------------------------------------------------------------------------ @@ -58,12 +61,14 @@ * Tests for file writability * * is_writable() returns TRUE on Windows servers when you really can't write to - * the file, based on the read-only attribute. is_writable() is also unreliable + * the file, based on the read-only attribute. is_writable() is also unreliable * on Unix servers if safe_mode is on. * * @access private * @return void */ +if ( ! function_exists('is_really_writable')) +{ function is_really_writable($file) { // If we're on a Unix server with safe_mode off we call is_writable @@ -73,7 +78,7 @@ } // For windows servers and safe_mode "on" installations we'll actually - // write a file then read it. Bah... + // write a file then read it. Bah... if (is_dir($file)) { $file = rtrim($file, '/').'/'.md5(mt_rand(1,100).mt_rand(1,100)); @@ -88,7 +93,7 @@ @unlink($file); return TRUE; } - elseif (($fp = @fopen($file, FOPEN_WRITE_CREATE)) === FALSE) + elseif ( ! is_file($file) OR ($fp = @fopen($file, FOPEN_WRITE_CREATE)) === FALSE) { return FALSE; } @@ -96,14 +101,15 @@ fclose($fp); return TRUE; } +} // ------------------------------------------------------------------------ /** * Class registry * -* This function acts as a singleton. If the requested class does not -* exist it is instantiated and set to a static variable. If it has +* This function acts as a singleton. If the requested class does not +* exist it is instantiated and set to a static variable. If it has * previously been instantiated the variable is returned. * * @access public @@ -112,11 +118,13 @@ * @param string the class name prefix * @return object */ +if ( ! function_exists('load_class')) +{ function &load_class($class, $directory = 'libraries', $prefix = 'CI_') { static $_classes = array(); - // Does the class exist? If so, we're done... + // Does the class exist? If so, we're done... if (isset($_classes[$class])) { return $_classes[$class]; @@ -128,27 +136,27 @@ // thenin the local application/libraries folder foreach (array(BASEPATH, APPPATH) as $path) { - if (file_exists($path.$directory.'/'.$class.EXT)) + if (file_exists($path.$directory.'/'.$class.'.php')) { $name = $prefix.$class; if (class_exists($name) === FALSE) { - require($path.$directory.'/'.$class.EXT); + require($path.$directory.'/'.$class.'.php'); } break; } } - // Is the request a class extension? If so we load it too - if (file_exists(APPPATH.$directory.'/'.config_item('subclass_prefix').$class.EXT)) + // Is the request a class extension? If so we load it too + if (file_exists(APPPATH.$directory.'/'.config_item('subclass_prefix').$class.'.php')) { $name = config_item('subclass_prefix').$class; if (class_exists($name) === FALSE) { - require(APPPATH.$directory.'/'.config_item('subclass_prefix').$class.EXT); + require(APPPATH.$directory.'/'.config_item('subclass_prefix').$class.'.php'); } } @@ -157,7 +165,7 @@ { // Note: We use exit() rather then show_error() in order to avoid a // self-referencing loop with the Excptions class - exit('Unable to locate the specified class: '.$class.EXT); + exit('Unable to locate the specified class: '.$class.'.php'); } // Keep track of what we just loaded @@ -166,16 +174,19 @@ $_classes[$class] = new $name(); return $_classes[$class]; } +} // -------------------------------------------------------------------- /** -* Keeps track of which libraries have been loaded. This function is +* Keeps track of which libraries have been loaded. This function is * called by the load_class() function above * * @access public * @return array */ +if ( ! function_exists('is_loaded')) +{ function is_loaded($class = '') { static $_is_loaded = array(); @@ -187,6 +198,7 @@ return $_is_loaded; } +} // ------------------------------------------------------------------------ @@ -199,6 +211,8 @@ * @access private * @return array */ +if ( ! function_exists('get_config')) +{ function &get_config($replace = array()) { static $_config; @@ -208,19 +222,18 @@ return $_config[0]; } - $file_path = APPPATH.'config/'.ENVIRONMENT.'/config'.EXT; + // Is the config file in the environment folder? + if ( ! defined('ENVIRONMENT') OR ! file_exists($file_path = APPPATH.'config/'.ENVIRONMENT.'/config.php')) + { + $file_path = APPPATH.'config/config.php'; + } // Fetch the config file if ( ! file_exists($file_path)) { - $file_path = APPPATH.'config/config'.EXT; - - if ( ! file_exists($file_path)) - { - exit('The configuration file does not exist.'); - } + exit('The configuration file does not exist.'); } - + require($file_path); // Does the $config array exist in the file? @@ -243,6 +256,7 @@ return $_config[0] =& $config; } +} // ------------------------------------------------------------------------ @@ -252,6 +266,8 @@ * @access public * @return mixed */ +if ( ! function_exists('config_item')) +{ function config_item($item) { static $_config_item = array(); @@ -269,6 +285,7 @@ return $_config_item[$item]; } +} // ------------------------------------------------------------------------ @@ -284,12 +301,15 @@ * @access public * @return void */ +if ( ! function_exists('show_error')) +{ function show_error($message, $status_code = 500, $heading = 'An Error Was Encountered') { $_error =& load_class('Exceptions', 'core'); echo $_error->show_error($heading, $message, 'error_general', $status_code); exit; } +} // ------------------------------------------------------------------------ @@ -303,12 +323,15 @@ * @access public * @return void */ +if ( ! function_exists('show_404')) +{ function show_404($page = '', $log_error = TRUE) { $_error =& load_class('Exceptions', 'core'); $_error->show_404($page, $log_error); exit; } +} // ------------------------------------------------------------------------ @@ -321,6 +344,8 @@ * @access public * @return void */ +if ( ! function_exists('log_message')) +{ function log_message($level = 'error', $message, $php_error = FALSE) { static $_log; @@ -333,6 +358,7 @@ $_log =& load_class('Log'); $_log->write_log($level, $message, $php_error); } +} // ------------------------------------------------------------------------ @@ -344,6 +370,8 @@ * @param string * @return void */ +if ( ! function_exists('set_status_header')) +{ function set_status_header($code = 200, $text = '') { $stati = array( @@ -400,7 +428,7 @@ if ($text == '') { - show_error('No status text available. Please check your status code number or supply your own message text.', 500); + show_error('No status text available. Please check your status code number or supply your own message text.', 500); } $server_protocol = (isset($_SERVER['SERVER_PROTOCOL'])) ? $_SERVER['SERVER_PROTOCOL'] : FALSE; @@ -418,6 +446,7 @@ header("HTTP/1.1 {$code} {$text}", TRUE, $code); } } +} // -------------------------------------------------------------------- @@ -425,7 +454,7 @@ * Exception Handler * * This is the custom exception handler that is declaired at the top -* of Codeigniter.php. The main reason we use this is to permit +* of Codeigniter.php. The main reason we use this is to permit * PHP errors to be logged in our own log files since the user may * not have access to server logs. Since this function * effectively intercepts PHP errors, however, we also need @@ -435,6 +464,8 @@ * @access private * @return void */ +if ( ! function_exists('_exception_handler')) +{ function _exception_handler($severity, $message, $filepath, $line) { // We don't bother with "strict" notices since they tend to fill up @@ -456,7 +487,7 @@ $_error->show_php_error($severity, $message, $filepath, $line); } - // Should we log the error? No? We're done... + // Should we log the error? No? We're done... if (config_item('log_threshold') == 0) { return; @@ -464,45 +495,46 @@ $_error->log_exception($severity, $message, $filepath, $line); } +} + +// -------------------------------------------------------------------- - // -------------------------------------------------------------------- - - /** - * Remove Invisible Characters - * - * This prevents sandwiching null characters - * between ascii characters, like Java\0script. - * - * @access public - * @param string - * @return string - */ - function remove_invisible_characters($str) +/** + * Remove Invisible Characters + * + * This prevents sandwiching null characters + * between ascii characters, like Java\0script. + * + * @access public + * @param string + * @return string + */ +if ( ! function_exists('remove_invisible_characters')) +{ + function remove_invisible_characters($str, $url_encoded = TRUE) { - static $non_displayables; + $non_displayables = array(); + + // every control character except newline (dec 10) + // carriage return (dec 13), and horizontal tab (dec 09) - if ( ! isset($non_displayables)) + if ($url_encoded) { - // every control character except newline (dec 10), carriage return (dec 13), and horizontal tab (dec 09), - $non_displayables = array( - '/%0[0-8bcef]/', // url encoded 00-08, 11, 12, 14, 15 - '/%1[0-9a-f]/', // url encoded 16-31 - '/[\x00-\x08]/', // 00-08 - '/\x0b/', '/\x0c/', // 11, 12 - '/[\x0e-\x1f]/' // 14-31 - ); + $non_displayables[] = '/%0[0-8bcef]/'; // url encoded 00-08, 11, 12, 14, 15 + $non_displayables[] = '/%1[0-9a-f]/'; // url encoded 16-31 } + $non_displayables[] = '/[\x00-\x08\x0B\x0C\x0E-\x1F\x7F]+/S'; // 00-08, 11, 12, 14-31, 127 + do { - $cleaned = $str; - $str = preg_replace($non_displayables, '', $str); + $str = preg_replace($non_displayables, '', $str, -1, $count); } - while ($cleaned != $str); + while ($count); return $str; } - +} /* End of file Common.php */ /* Location: ./system/core/Common.php */
\ No newline at end of file diff --git a/system/core/Config.php b/system/core/Config.php index a2a7dd564..fa71f4d3d 100644 --- a/system/core/Config.php +++ b/system/core/Config.php @@ -1,4 +1,4 @@ -<?php if ( ! defined('BASEPATH')) exit('No direct script access allowed'); +<?php if ( ! defined('BASEPATH')) exit('No direct script access allowed'); /** * CodeIgniter * @@ -37,11 +37,11 @@ class CI_Config { * * Sets the $config data from the primary config.php file as a class variable * - * @access public - * @param string the config file name - * @param boolean if configuration values should be loaded into their own section - * @param boolean true if errors should just return false, false if an error message should be displayed - * @return boolean if the file was successfully loaded or not + * @access public + * @param string the config file name + * @param boolean if configuration values should be loaded into their own section + * @param boolean true if errors should just return false, false if an error message should be displayed + * @return boolean if the file was successfully loaded or not */ function __construct() { @@ -74,36 +74,44 @@ class CI_Config { * * @access public * @param string the config file name - * @param boolean if configuration values should be loaded into their own section - * @param boolean true if errors should just return false, false if an error message should be displayed + * @param boolean if configuration values should be loaded into their own section + * @param boolean true if errors should just return false, false if an error message should be displayed * @return boolean if the file was loaded correctly */ function load($file = '', $use_sections = FALSE, $fail_gracefully = FALSE) { - $file = ($file == '') ? 'config' : str_replace(EXT, '', $file); + $file = ($file == '') ? 'config' : str_replace('.php', '', $file); + $found = FALSE; $loaded = FALSE; foreach ($this->_config_paths as $path) - { - $file_path = $path.'config/'.ENVIRONMENT.'/'.$file.EXT; + { + $check_locations = defined('ENVIRONMENT') + ? array(ENVIRONMENT.'/'.$file, $file) + : array($file); - if (in_array($file_path, $this->is_loaded, TRUE)) + foreach ($check_locations as $location) { - $loaded = TRUE; - continue; - } + $file_path = $path.'config/'.$location.'.php'; - if ( ! file_exists($file_path)) - { - log_message('debug', 'Config for '.ENVIRONMENT.' environment is not found. Trying global config.'); - $file_path = $path.'config/'.$file.EXT; - - if ( ! file_exists($file_path)) + if (in_array($file_path, $this->is_loaded, TRUE)) + { + $loaded = TRUE; + continue 2; + } + + if (file_exists($file_path)) { - continue; + $found = TRUE; + break; } } - + + if ($found === FALSE) + { + continue; + } + include($file_path); if ( ! isset($config) OR ! is_array($config)) @@ -136,6 +144,7 @@ class CI_Config { $loaded = TRUE; log_message('debug', 'Config file loaded: '.$file_path); + break; } if ($loaded === FALSE) @@ -144,9 +153,9 @@ class CI_Config { { return FALSE; } - show_error('The configuration file '.ENVIRONMENT.'/'.$file.EXT.' and '.$file.EXT.' do not exist.'); + show_error('The configuration file '.$file.'.php'.' does not exist.'); } - + return TRUE; } @@ -296,7 +305,7 @@ class CI_Config { * Assign to Config * * This function is called by the front controller (CodeIgniter.php) - * after the Config class is instantiated. It permits config items + * after the Config class is instantiated. It permits config items * to be assigned or overriden by variables contained in the index.php file * * @access private diff --git a/system/core/Controller.php b/system/core/Controller.php index 469663f09..107d3f346 100644 --- a/system/core/Controller.php +++ b/system/core/Controller.php @@ -1,4 +1,4 @@ -<?php if ( ! defined('BASEPATH')) exit('No direct script access allowed'); +<?php if ( ! defined('BASEPATH')) exit('No direct script access allowed'); /** * CodeIgniter * @@ -37,7 +37,7 @@ class CI_Controller { public function __construct() { self::$instance =& $this; - + // Assign all the class objects that were instantiated by the // bootstrap file (CodeIgniter.php) to local class variables // so that CI can run as one big super object. @@ -48,12 +48,9 @@ class CI_Controller { $this->load =& load_class('Loader', 'core'); - $this->load->_base_classes =& is_loaded(); - - $this->load->_ci_autoloader(); + $this->load->set_base_classes()->ci_autoloader(); log_message('debug', "Controller Class Initialized"); - } public static function &get_instance() diff --git a/system/core/Exceptions.php b/system/core/Exceptions.php index f5659561c..2503c907f 100644 --- a/system/core/Exceptions.php +++ b/system/core/Exceptions.php @@ -1,4 +1,4 @@ -<?php if ( ! defined('BASEPATH')) exit('No direct script access allowed'); +<?php if ( ! defined('BASEPATH')) exit('No direct script access allowed'); /** * CodeIgniter * @@ -54,7 +54,7 @@ class CI_Exceptions { public function __construct() { $this->ob_level = ob_get_level(); - // Note: Do not log messages from this constructor. + // Note: Do not log messages from this constructor. } // -------------------------------------------------------------------- @@ -75,7 +75,7 @@ class CI_Exceptions { { $severity = ( ! isset($this->levels[$severity])) ? $severity : $this->levels[$severity]; - log_message('error', 'Severity: '.$severity.' --> '.$message. ' '.$filepath.' '.$line, TRUE); + log_message('error', 'Severity: '.$severity.' --> '.$message. ' '.$filepath.' '.$line, TRUE); } // -------------------------------------------------------------------- @@ -128,7 +128,7 @@ class CI_Exceptions { ob_end_flush(); } ob_start(); - include(APPPATH.'errors/'.$template.EXT); + include(APPPATH.'errors/'.$template.'.php'); $buffer = ob_get_contents(); ob_end_clean(); return $buffer; @@ -164,7 +164,7 @@ class CI_Exceptions { ob_end_flush(); } ob_start(); - include(APPPATH.'errors/error_php'.EXT); + include(APPPATH.'errors/error_php.php'); $buffer = ob_get_contents(); ob_end_clean(); echo $buffer; diff --git a/system/core/Hooks.php b/system/core/Hooks.php index 75fd811b0..ffb3258d8 100644 --- a/system/core/Hooks.php +++ b/system/core/Hooks.php @@ -1,4 +1,4 @@ -<?php if ( ! defined('BASEPATH')) exit('No direct script access allowed'); +<?php if ( ! defined('BASEPATH')) exit('No direct script access allowed'); /** * CodeIgniter * @@ -65,7 +65,15 @@ class CI_Hooks { // Grab the "hooks" definition file. // If there are no hooks, we're done. - @include(APPPATH.'config/hooks'.EXT); + if (defined('ENVIRONMENT') AND is_file(APPPATH.'config/'.ENVIRONMENT.'/hooks.php')) + { + include(APPPATH.'config/'.ENVIRONMENT.'/hooks.php'); + } + elseif (is_file(APPPATH.'config/hooks.php')) + { + include(APPPATH.'config/hooks.php'); + } + if ( ! isset($hook) OR ! is_array($hook)) { diff --git a/system/core/Input.php b/system/core/Input.php index 626245390..89eda56b0 100644 --- a/system/core/Input.php +++ b/system/core/Input.php @@ -1,4 +1,4 @@ -<?php if ( ! defined('BASEPATH')) exit('No direct script access allowed'); +<?php if ( ! defined('BASEPATH')) exit('No direct script access allowed'); /** * CodeIgniter * @@ -36,7 +36,7 @@ class CI_Input { var $_enable_csrf = FALSE; // Set automatically based on config setting protected $headers = array(); - + /** * Constructor @@ -53,11 +53,8 @@ class CI_Input { $this->_enable_xss = (config_item('global_xss_filtering') === TRUE); $this->_enable_csrf = (config_item('csrf_protection') === TRUE); - // Do we need to load the security class? - if ($this->_enable_xss == TRUE OR $this->_enable_csrf == TRUE) - { - $this->security =& load_class('Security'); - } + global $SEC; + $this->security =& $SEC; // Do we need the UTF-8 class? if (UTF8_ENABLED === TRUE) @@ -92,8 +89,7 @@ class CI_Input { if ($xss_clean === TRUE) { - $_security =& load_class('Security'); - return $_security->xss_clean($array[$index]); + return $this->security->xss_clean($array[$index]); } return $array[$index]; @@ -151,7 +147,7 @@ class CI_Input { } return $post; } - + return $this->_fetch_from_array($_POST, $index, $xss_clean); } @@ -205,7 +201,7 @@ class CI_Input { * @param mixed * @param string the value of the cookie * @param string the number of seconds until expiration - * @param string the cookie domain. Usually: .yourdomain.com + * @param string the cookie domain. Usually: .yourdomain.com * @param string the cookie path * @param string the cookie prefix * @param bool true makes the cookie secure @@ -406,9 +402,9 @@ class CI_Input { function _sanitize_globals() { // It would be "wrong" to unset any of these GLOBALS. - $protected = array('_SERVER', '_GET', '_POST', '_FILES', '_REQUEST', + $protected = array('_SERVER', '_GET', '_POST', '_FILES', '_REQUEST', '_SESSION', '_ENV', 'GLOBALS', 'HTTP_RAW_POST_DATA', - 'system_folder', 'application_folder', 'BM', 'EXT', + 'system_folder', 'application_folder', 'BM', 'EXT', 'CFG', 'URI', 'RTR', 'OUT', 'IN'); // Unset globals for securiy. @@ -528,6 +524,9 @@ class CI_Input { $str = $this->uni->clean_string($str); } + // Remove control characters + $str = remove_invisible_characters($str); + // Should we filter the input data? if ($this->_enable_xss === TRUE) { @@ -539,7 +538,7 @@ class CI_Input { { if (strpos($str, "\r") !== FALSE) { - $str = str_replace(array("\r\n", "\r"), PHP_EOL, $str); + $str = str_replace(array("\r\n", "\r", "\r\n\n"), PHP_EOL, $str); } } @@ -580,7 +579,7 @@ class CI_Input { /** * Request Headers * - * In Apache, you can simply call apache_request_headers(), however for + * In Apache, you can simply call apache_request_headers(), however for * people running other webservers the function is undefined. * * @return array @@ -610,10 +609,10 @@ class CI_Input { { $key = str_replace('_', ' ', strtolower($key)); $key = str_replace(' ', '-', ucwords($key)); - + $this->headers[$key] = $val; } - + return $this->headers; } @@ -634,7 +633,7 @@ class CI_Input { { $this->request_headers(); } - + if ( ! isset($this->headers[$index])) { return FALSE; @@ -642,11 +641,10 @@ class CI_Input { if ($xss_clean === TRUE) { - $_security =& load_class('Security'); - return $_security->xss_clean($this->headers[$index]); + return $this->security->xss_clean($this->headers[$index]); } - return $this->headers[$index]; + return $this->headers[$index]; } // -------------------------------------------------------------------- diff --git a/system/core/Lang.php b/system/core/Lang.php index fb177902e..79eb443a0 100644 --- a/system/core/Lang.php +++ b/system/core/Lang.php @@ -1,4 +1,4 @@ -<?php if ( ! defined('BASEPATH')) exit('No direct script access allowed'); +<?php if ( ! defined('BASEPATH')) exit('No direct script access allowed'); /** * CodeIgniter * @@ -51,14 +51,14 @@ class CI_Lang { */ function load($langfile = '', $idiom = '', $return = FALSE, $add_suffix = TRUE, $alt_path = '') { - $langfile = str_replace(EXT, '', $langfile); + $langfile = str_replace('.php', '', $langfile); if ($add_suffix == TRUE) { $langfile = str_replace('_lang.', '', $langfile).'_lang'; } - $langfile .= EXT; + $langfile .= '.php'; if (in_array($langfile, $this->is_loaded, TRUE)) { @@ -129,12 +129,19 @@ class CI_Lang { */ function line($line = '') { - $line = ($line == '' OR ! isset($this->language[$line])) ? FALSE : $this->language[$line]; - return $line; + $value = ($line == '' OR ! isset($this->language[$line])) ? FALSE : $this->language[$line]; + + // Because killer robots like unicorns! + if ($value === FALSE) + { + log_message('error', 'Could not find the language line "'.$line.'"'); + } + + return $value; } } // END Language Class /* End of file Lang.php */ -/* Location: ./system/core/Lang.php */
\ No newline at end of file +/* Location: ./system/core/Lang.php */ diff --git a/system/core/Loader.php b/system/core/Loader.php index 7003318ee..87f05d86e 100644 --- a/system/core/Loader.php +++ b/system/core/Loader.php @@ -1,4 +1,4 @@ -<?php if ( ! defined('BASEPATH')) exit('No direct script access allowed'); +<?php if ( ! defined('BASEPATH')) exit('No direct script access allowed'); /** * CodeIgniter * @@ -29,34 +29,32 @@ class CI_Loader { // All these are set automatically. Don't mess with them. - var $_ci_ob_level; - var $_ci_view_path = ''; - var $_ci_library_paths = array(); - var $_ci_model_paths = array(); - var $_ci_helper_paths = array(); - var $_base_classes = array(); // Set by the controller class - var $_ci_cached_vars = array(); - var $_ci_classes = array(); - var $_ci_loaded_files = array(); - var $_ci_models = array(); - var $_ci_helpers = array(); - var $_ci_varmap = array('unit_test' => 'unit', 'user_agent' => 'agent'); - + protected $_ci_ob_level; + protected $_ci_view_paths = array(); + protected $_ci_library_paths = array(); + protected $_ci_model_paths = array(); + protected $_ci_helper_paths = array(); + protected $_base_classes = array(); // Set by the controller class + protected $_ci_cached_vars = array(); + protected $_ci_classes = array(); + protected $_ci_loaded_files = array(); + protected $_ci_models = array(); + protected $_ci_helpers = array(); + protected $_ci_varmap = array('unit_test' => 'unit', + 'user_agent' => 'agent'); /** * Constructor * * Sets the path to the view files and gets the initial output buffering level - * - * @access public */ - function __construct() + public function __construct() { - $this->_ci_view_path = APPPATH.'views/'; - $this->_ci_ob_level = ob_get_level(); + $this->_ci_ob_level = ob_get_level(); $this->_ci_library_paths = array(APPPATH, BASEPATH); $this->_ci_helper_paths = array(APPPATH, BASEPATH); $this->_ci_model_paths = array(APPPATH); + $this->_ci_view_paths = array(APPPATH.'views/' => TRUE); log_message('debug', "Loader Class Initialized"); } @@ -64,24 +62,64 @@ class CI_Loader { // -------------------------------------------------------------------- /** + * Set _base_classes variable + * + * This method is called once in CI_Controller. + * + * @param array + * @return object + */ + public function set_base_classes() + { + $this->_base_classes =& is_loaded(); + + return $this; + } + + // -------------------------------------------------------------------- + + /** + * Is Loaded + * + * A utility function to test if a class is in the self::$_ci_classes array. + * This function returns the object name if the class tested for is loaded, + * and returns FALSE if it isn't. + * + * It is mainly used in the form_helper -> _get_validation_object() + * + * @param string class being checked for + * @return mixed class object name on the CI SuperObject or FALSE + */ + public function is_loaded($class) + { + if (isset($this->_ci_classes[$class])) + { + return $this->_ci_classes[$class]; + } + + return FALSE; + } + + // -------------------------------------------------------------------- + + /** * Class Loader * * This function lets users load and instantiate classes. * It is designed to be called from a user's app controllers. * - * @access public * @param string the name of the class * @param mixed the optional parameters * @param string an optional object name * @return void */ - function library($library = '', $params = NULL, $object_name = NULL) + public function library($library = '', $params = NULL, $object_name = NULL) { if (is_array($library)) { - foreach ($library as $read) + foreach ($library as $class) { - $this->library($read); + $this->library($class, $params); } return; @@ -97,17 +135,7 @@ class CI_Loader { $params = NULL; } - if (is_array($library)) - { - foreach ($library as $class) - { - $this->_ci_load_class($class, $params, $object_name); - } - } - else - { - $this->_ci_load_class($library, $params, $object_name); - } + $this->_ci_load_class($library, $params, $object_name); } // -------------------------------------------------------------------- @@ -117,13 +145,12 @@ class CI_Loader { * * This function lets users load and instantiate models. * - * @access public * @param string the name of the class * @param string name for the model * @param bool database connection * @return void */ - function model($model, $name = '', $db_conn = FALSE) + public function model($model, $name = '', $db_conn = FALSE) { if (is_array($model)) { @@ -171,7 +198,7 @@ class CI_Loader { foreach ($this->_ci_model_paths as $mod_path) { - if ( ! file_exists($mod_path.'models/'.$path.$model.EXT)) + if ( ! file_exists($mod_path.'models/'.$path.$model.'.php')) { continue; } @@ -191,7 +218,7 @@ class CI_Loader { load_class('Model', 'core'); } - require_once($mod_path.'models/'.$path.$model.EXT); + require_once($mod_path.'models/'.$path.$model.'.php'); $model = ucfirst($model); @@ -210,13 +237,12 @@ class CI_Loader { /** * Database Loader * - * @access public * @param string the DB credentials * @param bool whether to return the DB object * @param bool whether to enable active record (this allows us to override the config setting) * @return object */ - function database($params = '', $return = FALSE, $active_record = NULL) + public function database($params = '', $return = FALSE, $active_record = NULL) { // Grab the super object $CI =& get_instance(); @@ -227,14 +253,14 @@ class CI_Loader { return FALSE; } - require_once(BASEPATH.'database/DB'.EXT); + require_once(BASEPATH.'database/DB.php'); if ($return === TRUE) { return DB($params, $active_record); } - // Initialize the db variable. Needed to prevent + // Initialize the db variable. Needed to prevent // reference errors with some configurations $CI->db = ''; @@ -247,10 +273,9 @@ class CI_Loader { /** * Load the Utilities Class * - * @access public * @return string */ - function dbutil() + public function dbutil() { if ( ! class_exists('CI_DB')) { @@ -263,8 +288,8 @@ class CI_Loader { // this use is deprecated and strongly discouraged $CI->load->dbforge(); - require_once(BASEPATH.'database/DB_utility'.EXT); - require_once(BASEPATH.'database/drivers/'.$CI->db->dbdriver.'/'.$CI->db->dbdriver.'_utility'.EXT); + require_once(BASEPATH.'database/DB_utility.php'); + require_once(BASEPATH.'database/drivers/'.$CI->db->dbdriver.'/'.$CI->db->dbdriver.'_utility.php'); $class = 'CI_DB_'.$CI->db->dbdriver.'_utility'; $CI->dbutil = new $class(); @@ -275,10 +300,9 @@ class CI_Loader { /** * Load the Database Forge Class * - * @access public * @return string */ - function dbforge() + public function dbforge() { if ( ! class_exists('CI_DB')) { @@ -287,8 +311,8 @@ class CI_Loader { $CI =& get_instance(); - require_once(BASEPATH.'database/DB_forge'.EXT); - require_once(BASEPATH.'database/drivers/'.$CI->db->dbdriver.'/'.$CI->db->dbdriver.'_forge'.EXT); + require_once(BASEPATH.'database/DB_forge.php'); + require_once(BASEPATH.'database/drivers/'.$CI->db->dbdriver.'/'.$CI->db->dbdriver.'_forge.php'); $class = 'CI_DB_'.$CI->db->dbdriver.'_forge'; $CI->dbforge = new $class(); @@ -299,21 +323,20 @@ class CI_Loader { /** * Load View * - * This function is used to load a "view" file. It has three parameters: + * This function is used to load a "view" file. It has three parameters: * * 1. The name of the "view" file to be included. * 2. An associative array of data to be extracted for use in the view. - * 3. TRUE/FALSE - whether to return the data or load it. In + * 3. TRUE/FALSE - whether to return the data or load it. In * some cases it's advantageous to be able to return data so that * a developer can process it in some way. * - * @access public * @param string * @param array * @param bool * @return void */ - function view($view, $vars = array(), $return = FALSE) + public function view($view, $vars = array(), $return = FALSE) { return $this->_ci_load(array('_ci_view' => $view, '_ci_vars' => $this->_ci_object_to_array($vars), '_ci_return' => $return)); } @@ -325,12 +348,11 @@ class CI_Loader { * * This is a generic file loader * - * @access public * @param string * @param bool * @return string */ - function file($path, $return = FALSE) + public function file($path, $return = FALSE) { return $this->_ci_load(array('_ci_path' => $path, '_ci_return' => $return)); } @@ -343,11 +365,10 @@ class CI_Loader { * Once variables are set they become available within * the controller class and its "view" files. * - * @access public * @param array * @return void */ - function vars($vars = array(), $val = '') + public function vars($vars = array(), $val = '') { if ($val != '' AND is_string($vars)) { @@ -372,11 +393,10 @@ class CI_Loader { * * This function loads the specified helper file. * - * @access public * @param mixed * @return void */ - function helper($helpers = array()) + public function helper($helpers = array()) { foreach ($this->_ci_prep_filename($helpers, '_helper') as $helper) { @@ -385,16 +405,16 @@ class CI_Loader { continue; } - $ext_helper = APPPATH.'helpers/'.config_item('subclass_prefix').$helper.EXT; + $ext_helper = APPPATH.'helpers/'.config_item('subclass_prefix').$helper.'.php'; // Is this a helper extension request? if (file_exists($ext_helper)) { - $base_helper = BASEPATH.'helpers/'.$helper.EXT; + $base_helper = BASEPATH.'helpers/'.$helper.'.php'; if ( ! file_exists($base_helper)) { - show_error('Unable to load the requested file: helpers/'.$helper.EXT); + show_error('Unable to load the requested file: helpers/'.$helper.'.php'); } include_once($ext_helper); @@ -408,9 +428,9 @@ class CI_Loader { // Try to load the helper foreach ($this->_ci_helper_paths as $path) { - if (file_exists($path.'helpers/'.$helper.EXT)) + if (file_exists($path.'helpers/'.$helper.'.php')) { - include_once($path.'helpers/'.$helper.EXT); + include_once($path.'helpers/'.$helper.'.php'); $this->_ci_helpers[$helper] = TRUE; log_message('debug', 'Helper loaded: '.$helper); @@ -421,7 +441,7 @@ class CI_Loader { // unable to load the helper if ( ! isset($this->_ci_helpers[$helper])) { - show_error('Unable to load the requested file: helpers/'.$helper.EXT); + show_error('Unable to load the requested file: helpers/'.$helper.'.php'); } } } @@ -434,11 +454,10 @@ class CI_Loader { * This is simply an alias to the above function in case the * user has written the plural form of this function. * - * @access public * @param array * @return void */ - function helpers($helpers = array()) + public function helpers($helpers = array()) { $this->helper($helpers); } @@ -448,12 +467,11 @@ class CI_Loader { /** * Loads a language file * - * @access public * @param array * @param string * @return void */ - function language($file = array(), $lang = '') + public function language($file = array(), $lang = '') { $CI =& get_instance(); @@ -473,11 +491,10 @@ class CI_Loader { /** * Loads a config file * - * @access public * @param string * @return void */ - function config($file = '', $use_sections = FALSE, $fail_gracefully = FALSE) + public function config($file = '', $use_sections = FALSE, $fail_gracefully = FALSE) { $CI =& get_instance(); $CI->config->load($file, $use_sections, $fail_gracefully); @@ -495,12 +512,12 @@ class CI_Loader { * @param string an optional object name * @return void */ - function driver($library = '', $params = NULL, $object_name = NULL) + public function driver($library = '', $params = NULL, $object_name = NULL) { if ( ! class_exists('CI_Driver_Library')) { // we aren't instantiating an object here, that'll be done by the Library itself - require BASEPATH.'libraries/Driver'.EXT; + require BASEPATH.'libraries/Driver.php'; } // We can save the loader some time since Drivers will *always* be in a subfolder, @@ -520,11 +537,11 @@ class CI_Loader { * * Prepends a parent path to the library, model, helper, and config path arrays * - * @access public * @param string + * @param boolean * @return void */ - function add_package_path($path) + public function add_package_path($path, $view_cascade=TRUE) { $path = rtrim($path, '/').'/'; @@ -532,6 +549,8 @@ class CI_Loader { array_unshift($this->_ci_model_paths, $path); array_unshift($this->_ci_helper_paths, $path); + $this->_ci_view_paths = array($path.'views/' => $view_cascade) + $this->_ci_view_paths; + // Add config file path $config =& $this->_ci_get_component('config'); array_unshift($config->_config_paths, $path); @@ -544,11 +563,10 @@ class CI_Loader { * * Return a list of all package paths, by default it will ignore BASEPATH. * - * @access public * @param string * @return void */ - function get_package_paths($include_base = FALSE) + public function get_package_paths($include_base = FALSE) { return $include_base === TRUE ? $this->_ci_library_paths : $this->_ci_model_paths; } @@ -561,11 +579,10 @@ class CI_Loader { * Remove a path from the library, model, and helper path arrays if it exists * If no path is provided, the most recently added path is removed. * - * @access public * @param type * @return type */ - function remove_package_path($path = '', $remove_config_path = TRUE) + public function remove_package_path($path = '', $remove_config_path = TRUE) { $config =& $this->_ci_get_component('config'); @@ -574,12 +591,12 @@ class CI_Loader { $void = array_shift($this->_ci_library_paths); $void = array_shift($this->_ci_model_paths); $void = array_shift($this->_ci_helper_paths); + $void = array_shift($this->_ci_view_paths); $void = array_shift($config->_config_paths); } else { $path = rtrim($path, '/').'/'; - foreach (array('_ci_library_paths', '_ci_model_paths', '_ci_helper_paths') as $var) { if (($key = array_search($path, $this->{$var})) !== FALSE) @@ -588,6 +605,11 @@ class CI_Loader { } } + if (isset($this->_ci_view_paths[$path.'views/'])) + { + unset($this->_ci_view_paths[$path.'views/']); + } + if (($key = array_search($path, $config->_config_paths)) !== FALSE) { unset($config->_config_paths[$key]); @@ -598,6 +620,7 @@ class CI_Loader { $this->_ci_library_paths = array_unique(array_merge($this->_ci_library_paths, array(APPPATH, BASEPATH))); $this->_ci_helper_paths = array_unique(array_merge($this->_ci_helper_paths, array(APPPATH, BASEPATH))); $this->_ci_model_paths = array_unique(array_merge($this->_ci_model_paths, array(APPPATH))); + $this->_ci_view_paths = array_merge($this->_ci_view_paths, array(APPPATH.'views/' => TRUE)); $config->_config_paths = array_unique(array_merge($config->_config_paths, array(APPPATH))); } @@ -610,11 +633,10 @@ class CI_Loader { * Variables are prefixed with _ci_ to avoid symbol collision with * variables made available to view files * - * @access private * @param array * @return void */ - function _ci_load($_ci_data) + protected function _ci_load($_ci_data) { // Set the default data variables foreach (array('_ci_view', '_ci_vars', '_ci_path', '_ci_return') as $_ci_val) @@ -622,20 +644,36 @@ class CI_Loader { $$_ci_val = ( ! isset($_ci_data[$_ci_val])) ? FALSE : $_ci_data[$_ci_val]; } + $file_exists = FALSE; + // Set the path to the requested file - if ($_ci_path == '') + if ($_ci_path != '') { - $_ci_ext = pathinfo($_ci_view, PATHINFO_EXTENSION); - $_ci_file = ($_ci_ext == '') ? $_ci_view.EXT : $_ci_view; - $_ci_path = $this->_ci_view_path.$_ci_file; + $_ci_x = explode('/', $_ci_path); + $_ci_file = end($_ci_x); } else { - $_ci_x = explode('/', $_ci_path); - $_ci_file = end($_ci_x); + $_ci_ext = pathinfo($_ci_view, PATHINFO_EXTENSION); + $_ci_file = ($_ci_ext == '') ? $_ci_view.'.php' : $_ci_view; + + foreach ($this->_ci_view_paths as $view_file => $cascade) + { + if (file_exists($view_file.$_ci_file)) + { + $_ci_path = $view_file.$_ci_file; + $file_exists = TRUE; + break; + } + + if ( ! $cascade) + { + break; + } + } } - if ( ! file_exists($_ci_path)) + if ( ! $file_exists && ! file_exists($_ci_path)) { show_error('Unable to load the requested file: '.$_ci_file); } @@ -672,9 +710,9 @@ class CI_Loader { * We buffer the output for two reasons: * 1. Speed. You get a significant speed boost. * 2. So that the final rendered template can be - * post-processed by the output class. Why do we - * need post processing? For one thing, in order to - * show the elapsed page load time. Unless we + * post-processed by the output class. Why do we + * need post processing? For one thing, in order to + * show the elapsed page load time. Unless we * can intercept the content right before it's sent to * the browser and then stop the timer it won't be accurate. */ @@ -731,18 +769,17 @@ class CI_Loader { * * This function loads the requested class. * - * @access private * @param string the item that is being loaded * @param mixed any additional parameters * @param string an optional object name * @return void */ - function _ci_load_class($class, $params = NULL, $object_name = NULL) + protected function _ci_load_class($class, $params = NULL, $object_name = NULL) { // Get the class name, and while we're at it trim any slashes. // The directory path can be included as part of the class name, // but we don't want a leading slash - $class = str_replace(EXT, '', trim($class, '/')); + $class = str_replace('.php', '', trim($class, '/')); // Was the path included with the class name? // We look for a slash to determine this @@ -759,12 +796,12 @@ class CI_Loader { // We'll test for both lowercase and capitalized versions of the file name foreach (array(ucfirst($class), strtolower($class)) as $class) { - $subclass = APPPATH.'libraries/'.$subdir.config_item('subclass_prefix').$class.EXT; + $subclass = APPPATH.'libraries/'.$subdir.config_item('subclass_prefix').$class.'.php'; // Is this a class extension request? if (file_exists($subclass)) { - $baseclass = BASEPATH.'libraries/'.ucfirst($class).EXT; + $baseclass = BASEPATH.'libraries/'.ucfirst($class).'.php'; if ( ! file_exists($baseclass)) { @@ -772,11 +809,11 @@ class CI_Loader { show_error("Unable to load the requested class: ".$class); } - // Safety: Was the class already loaded by a previous call? + // Safety: Was the class already loaded by a previous call? if (in_array($subclass, $this->_ci_loaded_files)) { // Before we deem this to be a duplicate request, let's see - // if a custom object name is being supplied. If so, we'll + // if a custom object name is being supplied. If so, we'll // return a new instance of the object if ( ! is_null($object_name)) { @@ -803,19 +840,19 @@ class CI_Loader { $is_duplicate = FALSE; foreach ($this->_ci_library_paths as $path) { - $filepath = $path.'libraries/'.$subdir.$class.EXT; + $filepath = $path.'libraries/'.$subdir.$class.'.php'; - // Does the file exist? No? Bummer... + // Does the file exist? No? Bummer... if ( ! file_exists($filepath)) { continue; } - // Safety: Was the class already loaded by a previous call? + // Safety: Was the class already loaded by a previous call? if (in_array($filepath, $this->_ci_loaded_files)) { // Before we deem this to be a duplicate request, let's see - // if a custom object name is being supplied. If so, we'll + // if a custom object name is being supplied. If so, we'll // return a new instance of the object if ( ! is_null($object_name)) { @@ -838,7 +875,7 @@ class CI_Loader { } // END FOREACH - // One last attempt. Maybe the library is in a subdirectory, but it wasn't specified? + // One last attempt. Maybe the library is in a subdirectory, but it wasn't specified? if ($subdir == '') { $path = strtolower($class).'/'.$class; @@ -859,15 +896,14 @@ class CI_Loader { /** * Instantiates a class * - * @access private * @param string * @param string * @param string an optional object name * @return null */ - function _ci_init_class($class, $prefix = '', $config = FALSE, $object_name = NULL) + protected function _ci_init_class($class, $prefix = '', $config = FALSE, $object_name = NULL) { - // Is there an associated config file for this class? Note: these should always be lowercase + // Is there an associated config file for this class? Note: these should always be lowercase if ($config === NULL) { // Fetch the config paths containing any package paths @@ -882,24 +918,24 @@ class CI_Loader { // We test for both uppercase and lowercase, for servers that // are case-sensitive with regard to file names. Check for environment // first, global next - if (file_exists($path .'config/'.ENVIRONMENT.'/'.strtolower($class).EXT)) + if (defined('ENVIRONMENT') AND file_exists($path .'config/'.ENVIRONMENT.'/'.strtolower($class).'.php')) { - include_once($path .'config/'.ENVIRONMENT.'/'.strtolower($class).EXT); + include_once($path .'config/'.ENVIRONMENT.'/'.strtolower($class).'.php'); break; } - elseif (file_exists($path .'config/'.ENVIRONMENT.'/'.ucfirst(strtolower($class)).EXT)) + elseif (defined('ENVIRONMENT') AND file_exists($path .'config/'.ENVIRONMENT.'/'.ucfirst(strtolower($class)).'.php')) { - include_once($path .'config/'.ENVIRONMENT.'/'.ucfirst(strtolower($class)).EXT); + include_once($path .'config/'.ENVIRONMENT.'/'.ucfirst(strtolower($class)).'.php'); break; } - elseif (file_exists($path .'config/'.strtolower($class).EXT)) + elseif (file_exists($path .'config/'.strtolower($class).'.php')) { - include_once($path .'config/'.strtolower($class).EXT); + include_once($path .'config/'.strtolower($class).'.php'); break; } - elseif (file_exists($path .'config/'.ucfirst(strtolower($class)).EXT)) + elseif (file_exists($path .'config/'.ucfirst(strtolower($class)).'.php')) { - include_once($path .'config/'.ucfirst(strtolower($class)).EXT); + include_once($path .'config/'.ucfirst(strtolower($class)).'.php'); break; } } @@ -934,7 +970,7 @@ class CI_Loader { } // Set the variable name we will assign the class to - // Was a custom class name supplied? If so we'll use it + // Was a custom class name supplied? If so we'll use it $class = strtolower($class); if (is_null($object_name)) @@ -969,13 +1005,23 @@ class CI_Loader { * The config/autoload.php file contains an array that permits sub-systems, * libraries, and helpers to be loaded automatically. * - * @access private + * This function is public, as it's used in the CI_Controller class. + * However, there is no reason you should ever needs to use it. + * * @param array * @return void */ - function _ci_autoloader() + public function ci_autoloader() { - include_once(APPPATH.'config/autoload'.EXT); + if (defined('ENVIRONMENT') AND file_exists(APPPATH.'config/'.ENVIRONMENT.'/autoload.php')) + { + include_once(APPPATH.'config/'.ENVIRONMENT.'/autoload.php'); + } + else + { + include_once(APPPATH.'config/autoload.php'); + } + if ( ! isset($autoload)) { @@ -1048,11 +1094,10 @@ class CI_Loader { * * Takes an object as input and converts the class variables to array key/vals * - * @access private * @param object * @return array */ - function _ci_object_to_array($object) + protected function _ci_object_to_array($object) { return (is_object($object)) ? get_object_vars($object) : $object; } @@ -1062,10 +1107,9 @@ class CI_Loader { /** * Get a reference to a specific library or model * - * @access private * @return bool */ - function &_ci_get_component($component) + protected function &_ci_get_component($component) { $CI =& get_instance(); return $CI->$component; @@ -1078,28 +1122,25 @@ class CI_Loader { * * This function preps the name of various items to make loading them more reliable. * - * @access private * @param mixed * @return array */ - function _ci_prep_filename($filename, $extension) + protected function _ci_prep_filename($filename, $extension) { if ( ! is_array($filename)) { - return array(strtolower(str_replace(EXT, '', str_replace($extension, '', $filename)).$extension)); + return array(strtolower(str_replace('.php', '', str_replace($extension, '', $filename)).$extension)); } else { foreach ($filename as $key => $val) { - $filename[$key] = strtolower(str_replace(EXT, '', str_replace($extension, '', $val)).$extension); + $filename[$key] = strtolower(str_replace('.php', '', str_replace($extension, '', $val)).$extension); } return $filename; } } - - } /* End of file Loader.php */ diff --git a/system/core/Model.php b/system/core/Model.php index 8566a0b66..61c71b672 100644 --- a/system/core/Model.php +++ b/system/core/Model.php @@ -1,4 +1,4 @@ -<?php if ( ! defined('BASEPATH')) exit('No direct script access allowed'); +<?php if ( ! defined('BASEPATH')) exit('No direct script access allowed'); /** * CodeIgniter * diff --git a/system/core/Output.php b/system/core/Output.php index 6644b3bff..562dbb86b 100644 --- a/system/core/Output.php +++ b/system/core/Output.php @@ -1,4 +1,4 @@ -<?php if ( ! defined('BASEPATH')) exit('No direct script access allowed'); +<?php if ( ! defined('BASEPATH')) exit('No direct script access allowed'); /** * CodeIgniter * @@ -33,19 +33,27 @@ class CI_Output { protected $headers = array(); protected $mime_types = array(); protected $enable_profiler = FALSE; - protected $parse_exec_vars = TRUE; // whether or not to parse variables like {elapsed_time} and {memory_usage} - protected $_zlib_oc = FALSE; protected $_profiler_sections = array(); + protected $parse_exec_vars = TRUE; // whether or not to parse variables like {elapsed_time} and {memory_usage} function __construct() { $this->_zlib_oc = @ini_get('zlib.output_compression'); // Get mime types for later - include APPPATH.'config/mimes'.EXT; + if (defined('ENVIRONMENT') AND file_exists(APPPATH.'config/'.ENVIRONMENT.'/mimes.php')) + { + include APPPATH.'config/'.ENVIRONMENT.'/mimes.php'; + } + else + { + include APPPATH.'config/mimes.php'; + } + + $this->mime_types = $mimes; - + log_message('debug', "Output Class Initialized"); } @@ -78,7 +86,7 @@ class CI_Output { function set_output($output) { $this->final_output = $output; - + return $this; } @@ -114,7 +122,7 @@ class CI_Output { * * Lets you set a server header which will be outputted with the final display. * - * Note: If a file is cached, headers will not be sent. We need to figure out + * Note: If a file is cached, headers will not be sent. We need to figure out * how to permit header data to be saved with the cache data... * * @access public @@ -168,7 +176,7 @@ class CI_Output { $header = 'Content-Type: '.$mime_type; $this->headers[] = array($header, TRUE); - + return $this; } @@ -253,7 +261,7 @@ class CI_Output { * $this->final_output * * This function sends the finalized output data to the browser along - * with any server headers and profile data. It also stops the + * with any server headers and profile data. It also stops the * benchmark timer so the page rendering speed and memory usage can be shown. * * @access public @@ -261,7 +269,7 @@ class CI_Output { */ function _display($output = '') { - // Note: We use globals because we can't use $CI =& get_instance() + // Note: We use globals because we can't use $CI =& get_instance() // since this function is sometimes called by the caching mechanism, // which happens before the CI super object is available. global $BM, $CFG; @@ -282,7 +290,7 @@ class CI_Output { // -------------------------------------------------------------------- - // Do we need to write a cache file? Only if the controller does not have its + // Do we need to write a cache file? Only if the controller does not have its // own _output() method and we are not dealing with a cache file, which we // can determine by the existence of the $CI object above if ($this->cache_expiration > 0 && isset($CI) && ! method_exists($CI, '_output')) @@ -360,7 +368,7 @@ class CI_Output { // we will remove them and add them back after we insert the profile data if (preg_match("|</body>.*?</html>|is", $output)) { - $output = preg_replace("|</body>.*?</html>|is", '', $output); + $output = preg_replace("|</body>.*?</html>|is", '', $output); $output .= $CI->profiler->run(); $output .= '</body></html>'; } @@ -373,14 +381,14 @@ class CI_Output { // -------------------------------------------------------------------- // Does the controller contain a function named _output()? - // If so send the output there. Otherwise, echo it. + // If so send the output there. Otherwise, echo it. if (method_exists($CI, '_output')) { $CI->_output($output); } else { - echo $output; // Send it to the browser! + echo $output; // Send it to the browser! } log_message('debug', "Final output sent to browser"); @@ -450,7 +458,7 @@ class CI_Output { { $cache_path = ($CFG->item('cache_path') == '') ? APPPATH.'cache/' : $CFG->item('cache_path'); - // Build the file path. The file name is an MD5 hash of the full URI + // Build the file path. The file name is an MD5 hash of the full URI $uri = $CFG->item('base_url'). $CFG->item('index_page'). $URI->uri_string; diff --git a/system/core/Router.php b/system/core/Router.php index 6893e6e92..a76a7bd0a 100644 --- a/system/core/Router.php +++ b/system/core/Router.php @@ -1,4 +1,4 @@ -<?php if ( ! defined('BASEPATH')) exit('No direct script access allowed'); +<?php if ( ! defined('BASEPATH')) exit('No direct script access allowed'); /** * CodeIgniter * @@ -61,7 +61,7 @@ class CI_Router { */ function _set_routing() { - // Are query strings enabled in the config file? Normally CI doesn't utilize query strings + // Are query strings enabled in the config file? Normally CI doesn't utilize query strings // since URI segments are more search-engine friendly, but they can optionally be used. // If this feature is enabled, we will gather the directory/class/method a little differently $segments = array(); @@ -87,7 +87,15 @@ class CI_Router { } // Load the routes.php file. - @include(APPPATH.'config/routes'.EXT); + if (defined('ENVIRONMENT') AND is_file(APPPATH.'config/'.ENVIRONMENT.'/routes.php')) + { + include(APPPATH.'config/'.ENVIRONMENT.'/routes.php'); + } + elseif (is_file(APPPATH.'config/routes.php')) + { + include(APPPATH.'config/routes.php'); + } + $this->routes = ( ! isset($route) OR ! is_array($route)) ? array() : $route; unset($route); @@ -95,7 +103,7 @@ class CI_Router { // the URI doesn't correlated to a valid controller. $this->default_controller = ( ! isset($this->routes['default_controller']) OR $this->routes['default_controller'] == '') ? FALSE : strtolower($this->routes['default_controller']); - // Were there any query string segments? If so, we'll validate them and bail out since we're done. + // Were there any query string segments? If so, we'll validate them and bail out since we're done. if (count($segments) > 0) { return $this->_validate_request($segments); @@ -204,7 +212,7 @@ class CI_Router { // -------------------------------------------------------------------- /** - * Validates the supplied segments. Attempts to determine the path to + * Validates the supplied segments. Attempts to determine the path to * the controller. * * @access private @@ -219,7 +227,7 @@ class CI_Router { } // Does the requested controller exist in the root folder? - if (file_exists(APPPATH.'controllers/'.$segments[0].EXT)) + if (file_exists(APPPATH.'controllers/'.$segments[0].'.php')) { return $segments; } @@ -234,7 +242,7 @@ class CI_Router { if (count($segments) > 0) { // Does the requested controller exist in the sub-folder? - if ( ! file_exists(APPPATH.'controllers/'.$this->fetch_directory().$segments[0].EXT)) + if ( ! file_exists(APPPATH.'controllers/'.$this->fetch_directory().$segments[0].'.php')) { show_404($this->fetch_directory().$segments[0]); } @@ -256,7 +264,7 @@ class CI_Router { } // Does the default controller exist in the sub-folder? - if ( ! file_exists(APPPATH.'controllers/'.$this->fetch_directory().$this->default_controller.EXT)) + if ( ! file_exists(APPPATH.'controllers/'.$this->fetch_directory().$this->default_controller.'.php')) { $this->directory = ''; return array(); @@ -269,7 +277,7 @@ class CI_Router { // If we've gotten this far it means that the URI does not correlate to a valid - // controller class. We will now see if there is an override + // controller class. We will now see if there is an override if ( ! empty($this->routes['404_override'])) { $x = explode('/', $this->routes['404_override']); @@ -288,7 +296,7 @@ class CI_Router { // -------------------------------------------------------------------- /** - * Parse Routes + * Parse Routes * * This function matches any routes that may exist in * the config/routes.php file against the URI to @@ -302,7 +310,7 @@ class CI_Router { // Turn the segment array into a URI string $uri = implode('/', $this->uri->segments); - // Is there a literal match? If so we're done + // Is there a literal match? If so we're done if (isset($this->routes[$uri])) { return $this->_set_request(explode('/', $this->routes[$uri])); @@ -362,7 +370,7 @@ class CI_Router { // -------------------------------------------------------------------- /** - * Set the method name + * Set the method name * * @access public * @param string @@ -376,7 +384,7 @@ class CI_Router { // -------------------------------------------------------------------- /** - * Fetch the current method + * Fetch the current method * * @access public * @return string @@ -394,7 +402,7 @@ class CI_Router { // -------------------------------------------------------------------- /** - * Set the directory name + * Set the directory name * * @access public * @param string @@ -408,7 +416,7 @@ class CI_Router { // -------------------------------------------------------------------- /** - * Fetch the sub-directory (if any) that contains the requested controller class + * Fetch the sub-directory (if any) that contains the requested controller class * * @access public * @return string @@ -421,7 +429,7 @@ class CI_Router { // -------------------------------------------------------------------- /** - * Set the controller overrides + * Set the controller overrides * * @access public * @param array diff --git a/system/core/Security.php b/system/core/Security.php new file mode 100644 index 000000000..f5bfafd9b --- /dev/null +++ b/system/core/Security.php @@ -0,0 +1,832 @@ +<?php if ( ! defined('BASEPATH')) exit('No direct script access allowed'); +/** + * CodeIgniter + * + * An open source application development framework for PHP 5.1.6 or newer + * + * @package CodeIgniter + * @author ExpressionEngine Dev Team + * @copyright Copyright (c) 2008 - 2011, EllisLab, Inc. + * @license http://codeigniter.com/user_guide/license.html + * @link http://codeigniter.com + * @since Version 1.0 + * @filesource + */ + +// ------------------------------------------------------------------------ + +/** + * Security Class + * + * @package CodeIgniter + * @subpackage Libraries + * @category Security + * @author ExpressionEngine Dev Team + * @link http://codeigniter.com/user_guide/libraries/security.html + */ +class CI_Security { + + protected $_xss_hash = ''; + protected $_csrf_hash = ''; + protected $_csrf_expire = 7200; // Two hours (in seconds) + protected $_csrf_token_name = 'ci_csrf_token'; + protected $_csrf_cookie_name = 'ci_csrf_token'; + + /* never allowed, string replacement */ + protected $_never_allowed_str = array( + 'document.cookie' => '[removed]', + 'document.write' => '[removed]', + '.parentNode' => '[removed]', + '.innerHTML' => '[removed]', + 'window.location' => '[removed]', + '-moz-binding' => '[removed]', + '<!--' => '<!--', + '-->' => '-->', + '<![CDATA[' => '<![CDATA[' + ); + + /* never allowed, regex replacement */ + protected $_never_allowed_regex = array( + "javascript\s*:" => '[removed]', + "expression\s*(\(|&\#40;)" => '[removed]', // CSS and IE + "vbscript\s*:" => '[removed]', // IE, surprise! + "Redirect\s+302" => '[removed]' + ); + + /** + * Constructor + */ + public function __construct() + { + // CSRF config + foreach(array('csrf_expire', 'csrf_token_name', 'csrf_cookie_name') as $key) + { + if (FALSE !== ($val = config_item($key))) + { + $this->{'_'.$key} = $val; + } + } + + // Append application specific cookie prefix + if (config_item('cookie_prefix')) + { + $this->_csrf_cookie_name = config_item('cookie_prefix').$this->_csrf_cookie_name; + } + + // Set the CSRF hash + $this->_csrf_set_hash(); + + log_message('debug', "Security Class Initialized"); + } + + // -------------------------------------------------------------------- + + /** + * Verify Cross Site Request Forgery Protection + * + * @return object + */ + public function csrf_verify() + { + // If no POST data exists we will set the CSRF cookie + if (count($_POST) == 0) + { + return $this->csrf_set_cookie(); + } + + // Do the tokens exist in both the _POST and _COOKIE arrays? + if ( ! isset($_POST[$this->_csrf_token_name]) OR + ! isset($_COOKIE[$this->_csrf_cookie_name])) + { + $this->csrf_show_error(); + } + + // Do the tokens match? + if ($_POST[$this->_csrf_token_name] != $_COOKIE[$this->_csrf_cookie_name]) + { + $this->csrf_show_error(); + } + + // We kill this since we're done and we don't want to + // polute the _POST array + unset($_POST[$this->_csrf_token_name]); + + // Nothing should last forever + unset($_COOKIE[$this->_csrf_cookie_name]); + $this->_csrf_set_hash(); + $this->csrf_set_cookie(); + + log_message('debug', "CSRF token verified "); + + return $this; + } + + // -------------------------------------------------------------------- + + /** + * Set Cross Site Request Forgery Protection Cookie + * + * @return object + */ + public function csrf_set_cookie() + { + $expire = time() + $this->_csrf_expire; + $secure_cookie = (config_item('cookie_secure') === TRUE) ? 1 : 0; + + if ($secure_cookie) + { + $req = isset($_SERVER['HTTPS']) ? $_SERVER['HTTPS'] : FALSE; + + if ( ! $req OR $req == 'off') + { + return FALSE; + } + } + + setcookie($this->_csrf_cookie_name, $this->_csrf_hash, $expire, config_item('cookie_path'), config_item('cookie_domain'), $secure_cookie); + + log_message('debug', "CRSF cookie Set"); + + return $this; + } + + // -------------------------------------------------------------------- + + /** + * Show CSRF Error + * + * @return void + */ + public function csrf_show_error() + { + show_error('The action you have requested is not allowed.'); + } + + // -------------------------------------------------------------------- + + /** + * Get CSRF Hash + * + * Getter Method + * + * @return string self::_csrf_hash + */ + public function get_csrf_hash() + { + return $this->_csrf_hash; + } + + // -------------------------------------------------------------------- + + /** + * Get CSRF Token Name + * + * Getter Method + * + * @return string self::csrf_token_name + */ + public function get_csrf_token_name() + { + return $this->_csrf_token_name; + } + + // -------------------------------------------------------------------- + + /** + * XSS Clean + * + * Sanitizes data so that Cross Site Scripting Hacks can be + * prevented. This function does a fair amount of work but + * it is extremely thorough, designed to prevent even the + * most obscure XSS attempts. Nothing is ever 100% foolproof, + * of course, but I haven't been able to get anything passed + * the filter. + * + * Note: This function should only be used to deal with data + * upon submission. It's not something that should + * be used for general runtime processing. + * + * This function was based in part on some code and ideas I + * got from Bitflux: http://channel.bitflux.ch/wiki/XSS_Prevention + * + * To help develop this script I used this great list of + * vulnerabilities along with a few other hacks I've + * harvested from examining vulnerabilities in other programs: + * http://ha.ckers.org/xss.html + * + * @param mixed string or array + * @return string + */ + public function xss_clean($str, $is_image = FALSE) + { + /* + * Is the string an array? + * + */ + if (is_array($str)) + { + while (list($key) = each($str)) + { + $str[$key] = $this->xss_clean($str[$key]); + } + + return $str; + } + + /* + * Remove Invisible Characters + */ + $str = remove_invisible_characters($str); + + // Validate Entities in URLs + $str = $this->_validate_entities($str); + + /* + * URL Decode + * + * Just in case stuff like this is submitted: + * + * <a href="http://%77%77%77%2E%67%6F%6F%67%6C%65%2E%63%6F%6D">Google</a> + * + * Note: Use rawurldecode() so it does not remove plus signs + * + */ + $str = rawurldecode($str); + + /* + * Convert character entities to ASCII + * + * This permits our tests below to work reliably. + * We only convert entities that are within tags since + * these are the ones that will pose security problems. + * + */ + + $str = preg_replace_callback("/[a-z]+=([\'\"]).*?\\1/si", array($this, '_convert_attribute'), $str); + + $str = preg_replace_callback("/<\w+.*?(?=>|<|$)/si", array($this, '_decode_entity'), $str); + + /* + * Remove Invisible Characters Again! + */ + $str = remove_invisible_characters($str); + + /* + * Convert all tabs to spaces + * + * This prevents strings like this: ja vascript + * NOTE: we deal with spaces between characters later. + * NOTE: preg_replace was found to be amazingly slow here on + * large blocks of data, so we use str_replace. + */ + + if (strpos($str, "\t") !== FALSE) + { + $str = str_replace("\t", ' ', $str); + } + + /* + * Capture converted string for later comparison + */ + $converted_string = $str; + + // Remove Strings that are never allowed + $str = $this->_do_never_allowed($str); + + /* + * Makes PHP tags safe + * + * Note: XML tags are inadvertently replaced too: + * + * <?xml + * + * But it doesn't seem to pose a problem. + */ + if ($is_image === TRUE) + { + // Images have a tendency to have the PHP short opening and + // closing tags every so often so we skip those and only + // do the long opening tags. + $str = preg_replace('/<\?(php)/i', "<?\\1", $str); + } + else + { + $str = str_replace(array('<?', '?'.'>'), array('<?', '?>'), $str); + } + + /* + * Compact any exploded words + * + * This corrects words like: j a v a s c r i p t + * These words are compacted back to their correct state. + */ + $words = array( + 'javascript', 'expression', 'vbscript', 'script', + 'applet', 'alert', 'document', 'write', 'cookie', 'window' + ); + + foreach ($words as $word) + { + $temp = ''; + + for ($i = 0, $wordlen = strlen($word); $i < $wordlen; $i++) + { + $temp .= substr($word, $i, 1)."\s*"; + } + + // We only want to do this when it is followed by a non-word character + // That way valid stuff like "dealer to" does not become "dealerto" + $str = preg_replace_callback('#('.substr($temp, 0, -3).')(\W)#is', array($this, '_compact_exploded_words'), $str); + } + + /* + * Remove disallowed Javascript in links or img tags + * We used to do some version comparisons and use of stripos for PHP5, + * but it is dog slow compared to these simplified non-capturing + * preg_match(), especially if the pattern exists in the string + */ + do + { + $original = $str; + + if (preg_match("/<a/i", $str)) + { + $str = preg_replace_callback("#<a\s+([^>]*?)(>|$)#si", array($this, '_js_link_removal'), $str); + } + + if (preg_match("/<img/i", $str)) + { + $str = preg_replace_callback("#<img\s+([^>]*?)(\s?/?>|$)#si", array($this, '_js_img_removal'), $str); + } + + if (preg_match("/script/i", $str) OR preg_match("/xss/i", $str)) + { + $str = preg_replace("#<(/*)(script|xss)(.*?)\>#si", '[removed]', $str); + } + } + while($original != $str); + + unset($original); + + // Remove evil attributes such as style, onclick and xmlns + $str = $this->_remove_evil_attributes($str, $is_image); + + /* + * Sanitize naughty HTML elements + * + * If a tag containing any of the words in the list + * below is found, the tag gets converted to entities. + * + * So this: <blink> + * Becomes: <blink> + */ + $naughty = 'alert|applet|audio|basefont|base|behavior|bgsound|blink|body|embed|expression|form|frameset|frame|head|html|ilayer|iframe|input|isindex|layer|link|meta|object|plaintext|style|script|textarea|title|video|xml|xss'; + $str = preg_replace_callback('#<(/*\s*)('.$naughty.')([^><]*)([><]*)#is', array($this, '_sanitize_naughty_html'), $str); + + /* + * Sanitize naughty scripting elements + * + * Similar to above, only instead of looking for + * tags it looks for PHP and JavaScript commands + * that are disallowed. Rather than removing the + * code, it simply converts the parenthesis to entities + * rendering the code un-executable. + * + * For example: eval('some code') + * Becomes: eval('some code') + */ + $str = preg_replace('#(alert|cmd|passthru|eval|exec|expression|system|fopen|fsockopen|file|file_get_contents|readfile|unlink)(\s*)\((.*?)\)#si', "\\1\\2(\\3)", $str); + + + // Final clean up + // This adds a bit of extra precaution in case + // something got through the above filters + $str = $this->_do_never_allowed($str); + + /* + * Images are Handled in a Special Way + * - Essentially, we want to know that after all of the character + * conversion is done whether any unwanted, likely XSS, code was found. + * If not, we return TRUE, as the image is clean. + * However, if the string post-conversion does not matched the + * string post-removal of XSS, then it fails, as there was unwanted XSS + * code found and removed/changed during processing. + */ + + if ($is_image === TRUE) + { + return ($str == $converted_string) ? TRUE: FALSE; + } + + log_message('debug', "XSS Filtering completed"); + return $str; + } + + // -------------------------------------------------------------------- + + /** + * Random Hash for protecting URLs + * + * @return string + */ + public function xss_hash() + { + if ($this->_xss_hash == '') + { + if (phpversion() >= 4.2) + { + mt_srand(); + } + else + { + mt_srand(hexdec(substr(md5(microtime()), -8)) & 0x7fffffff); + } + + $this->_xss_hash = md5(time() + mt_rand(0, 1999999999)); + } + + return $this->_xss_hash; + } + + // -------------------------------------------------------------------- + + /** + * HTML Entities Decode + * + * This function is a replacement for html_entity_decode() + * + * In some versions of PHP the native function does not work + * when UTF-8 is the specified character set, so this gives us + * a work-around. More info here: + * http://bugs.php.net/bug.php?id=25670 + * + * NOTE: html_entity_decode() has a bug in some PHP versions when UTF-8 is the + * character set, and the PHP developers said they were not back porting the + * fix to versions other than PHP 5.x. + * + * @param string + * @param string + * @return string + */ + public function entity_decode($str, $charset='UTF-8') + { + if (stristr($str, '&') === FALSE) return $str; + + // The reason we are not using html_entity_decode() by itself is because + // while it is not technically correct to leave out the semicolon + // at the end of an entity most browsers will still interpret the entity + // correctly. html_entity_decode() does not convert entities without + // semicolons, so we are left with our own little solution here. Bummer. + + if (function_exists('html_entity_decode') && + (strtolower($charset) != 'utf-8')) + { + $str = html_entity_decode($str, ENT_COMPAT, $charset); + $str = preg_replace('~&#x(0*[0-9a-f]{2,5})~ei', 'chr(hexdec("\\1"))', $str); + return preg_replace('~&#([0-9]{2,4})~e', 'chr(\\1)', $str); + } + + // Numeric Entities + $str = preg_replace('~&#x(0*[0-9a-f]{2,5});{0,1}~ei', 'chr(hexdec("\\1"))', $str); + $str = preg_replace('~&#([0-9]{2,4});{0,1}~e', 'chr(\\1)', $str); + + // Literal Entities - Slightly slow so we do another check + if (stristr($str, '&') === FALSE) + { + $str = strtr($str, array_flip(get_html_translation_table(HTML_ENTITIES))); + } + + return $str; + } + + // -------------------------------------------------------------------- + + /** + * Filename Security + * + * @param string + * @return string + */ + public function sanitize_filename($str, $relative_path = FALSE) + { + $bad = array( + "../", + "<!--", + "-->", + "<", + ">", + "'", + '"', + '&', + '$', + '#', + '{', + '}', + '[', + ']', + '=', + ';', + '?', + "%20", + "%22", + "%3c", // < + "%253c", // < + "%3e", // > + "%0e", // > + "%28", // ( + "%29", // ) + "%2528", // ( + "%26", // & + "%24", // $ + "%3f", // ? + "%3b", // ; + "%3d" // = + ); + + if ( ! $relative_path) + { + $bad[] = './'; + $bad[] = '/'; + } + + $str = remove_invisible_characters($str, FALSE); + return stripslashes(str_replace($bad, '', $str)); + } + + // ---------------------------------------------------------------- + + /** + * Compact Exploded Words + * + * Callback function for xss_clean() to remove whitespace from + * things like j a v a s c r i p t + * + * @param type + * @return type + */ + protected function _compact_exploded_words($matches) + { + return preg_replace('/\s+/s', '', $matches[1]).$matches[2]; + } + + // -------------------------------------------------------------------- + + /* + * Remove Evil HTML Attributes (like evenhandlers and style) + * + * It removes the evil attribute and either: + * - Everything up until a space + * For example, everything between the pipes: + * <a |style=document.write('hello');alert('world');| class=link> + * - Everything inside the quotes + * For example, everything between the pipes: + * <a |style="document.write('hello'); alert('world');"| class="link"> + * + * @param string $str The string to check + * @param boolean $is_image TRUE if this is an image + * @return string The string with the evil attributes removed + */ + protected function _remove_evil_attributes($str, $is_image) + { + // All javascript event handlers (e.g. onload, onclick, onmouseover), style, and xmlns + $evil_attributes = array('on\w*', 'style', 'xmlns'); + + if ($is_image === TRUE) + { + /* + * Adobe Photoshop puts XML metadata into JFIF images, + * including namespacing, so we have to allow this for images. + */ + unset($evil_attributes[array_search('xmlns', $evil_attributes)]); + } + + do { + $str = preg_replace( + "#<(/?[^><]+?)([^A-Za-z\-])(".implode('|', $evil_attributes).")(\s*=\s*)([\"][^>]*?[\"]|[\'][^>]*?[\']|[^>]*?)([\s><])([><]*)#i", + "<$1$6", + $str, -1, $count + ); + } while ($count); + + return $str; + } + + // -------------------------------------------------------------------- + + /** + * Sanitize Naughty HTML + * + * Callback function for xss_clean() to remove naughty HTML elements + * + * @param array + * @return string + */ + protected function _sanitize_naughty_html($matches) + { + // encode opening brace + $str = '<'.$matches[1].$matches[2].$matches[3]; + + // encode captured opening or closing brace to prevent recursive vectors + $str .= str_replace(array('>', '<'), array('>', '<'), + $matches[4]); + + return $str; + } + + // -------------------------------------------------------------------- + + /** + * JS Link Removal + * + * Callback function for xss_clean() to sanitize links + * This limits the PCRE backtracks, making it more performance friendly + * and prevents PREG_BACKTRACK_LIMIT_ERROR from being triggered in + * PHP 5.2+ on link-heavy strings + * + * @param array + * @return string + */ + protected function _js_link_removal($match) + { + $attributes = $this->_filter_attributes(str_replace(array('<', '>'), '', $match[1])); + + return str_replace($match[1], preg_replace("#href=.*?(alert\(|alert&\#40;|javascript\:|livescript\:|mocha\:|charset\=|window\.|document\.|\.cookie|<script|<xss|base64\s*,)#si", "", $attributes), $match[0]); + } + + // -------------------------------------------------------------------- + + /** + * JS Image Removal + * + * Callback function for xss_clean() to sanitize image tags + * This limits the PCRE backtracks, making it more performance friendly + * and prevents PREG_BACKTRACK_LIMIT_ERROR from being triggered in + * PHP 5.2+ on image tag heavy strings + * + * @param array + * @return string + */ + protected function _js_img_removal($match) + { + $attributes = $this->_filter_attributes(str_replace(array('<', '>'), '', $match[1])); + + return str_replace($match[1], preg_replace("#src=.*?(alert\(|alert&\#40;|javascript\:|livescript\:|mocha\:|charset\=|window\.|document\.|\.cookie|<script|<xss|base64\s*,)#si", "", $attributes), $match[0]); + } + + // -------------------------------------------------------------------- + + /** + * Attribute Conversion + * + * Used as a callback for XSS Clean + * + * @param array + * @return string + */ + protected function _convert_attribute($match) + { + return str_replace(array('>', '<', '\\'), array('>', '<', '\\\\'), $match[0]); + } + + // -------------------------------------------------------------------- + + /** + * Filter Attributes + * + * Filters tag attributes for consistency and safety + * + * @param string + * @return string + */ + protected function _filter_attributes($str) + { + $out = ''; + + if (preg_match_all('#\s*[a-z\-]+\s*=\s*(\042|\047)([^\\1]*?)\\1#is', $str, $matches)) + { + foreach ($matches[0] as $match) + { + $out .= preg_replace("#/\*.*?\*/#s", '', $match); + } + } + + return $out; + } + + // -------------------------------------------------------------------- + + /** + * HTML Entity Decode Callback + * + * Used as a callback for XSS Clean + * + * @param array + * @return string + */ + protected function _decode_entity($match) + { + return $this->entity_decode($match[0], strtoupper(config_item('charset'))); + } + + // -------------------------------------------------------------------- + + /** + * Validate URL entities + * + * Called by xss_clean() + * + * @param string + * @return string + */ + protected function _validate_entities($str) + { + /* + * Protect GET variables in URLs + */ + + // 901119URL5918AMP18930PROTECT8198 + + $str = preg_replace('|\&([a-z\_0-9\-]+)\=([a-z\_0-9\-]+)|i', $this->xss_hash()."\\1=\\2", $str); + + /* + * Validate standard character entities + * + * Add a semicolon if missing. We do this to enable + * the conversion of entities to ASCII later. + * + */ + $str = preg_replace('#(&\#?[0-9a-z]{2,})([\x00-\x20])*;?#i', "\\1;\\2", $str); + + /* + * Validate UTF16 two byte encoding (x00) + * + * Just as above, adds a semicolon if missing. + * + */ + $str = preg_replace('#(&\#x?)([0-9A-F]+);?#i',"\\1\\2;",$str); + + /* + * Un-Protect GET variables in URLs + */ + $str = str_replace($this->xss_hash(), '&', $str); + + return $str; + } + + // ---------------------------------------------------------------------- + + /** + * Do Never Allowed + * + * A utility function for xss_clean() + * + * @param string + * @return string + */ + protected function _do_never_allowed($str) + { + foreach ($this->_never_allowed_str as $key => $val) + { + $str = str_replace($key, $val, $str); + } + + foreach ($this->_never_allowed_regex as $key => $val) + { + $str = preg_replace("#".$key."#i", $val, $str); + } + + return $str; + } + + // -------------------------------------------------------------------- + + /** + * Set Cross Site Request Forgery Protection Cookie + * + * @return string + */ + protected function _csrf_set_hash() + { + if ($this->_csrf_hash == '') + { + // If the cookie exists we will use it's value. + // We don't necessarily want to regenerate it with + // each page load since a page could contain embedded + // sub-pages causing this feature to fail + if (isset($_COOKIE[$this->_csrf_cookie_name]) && + $_COOKIE[$this->_csrf_cookie_name] != '') + { + return $this->_csrf_hash = $_COOKIE[$this->_csrf_cookie_name]; + } + + return $this->_csrf_hash = md5(uniqid(rand(), TRUE)); + } + + return $this->_csrf_hash; + } + +} +// END Security Class + +/* End of file Security.php */ +/* Location: ./system/libraries/Security.php */ diff --git a/system/core/URI.php b/system/core/URI.php index c43cde005..94fac59ac 100644 --- a/system/core/URI.php +++ b/system/core/URI.php @@ -1,4 +1,4 @@ -<?php if ( ! defined('BASEPATH')) exit('No direct script access allowed'); +<?php if ( ! defined('BASEPATH')) exit('No direct script access allowed'); /** * CodeIgniter * @@ -36,7 +36,7 @@ class CI_URI { /** * Constructor * - * Simply globalizes the $RTR object. The front + * Simply globalizes the $RTR object. The front * loads the Router class early on so it's not available * normally as other classes are. * @@ -64,14 +64,14 @@ class CI_URI { // Is the request coming from the command line? if (defined('STDIN')) { - $this->uri_string = $this->_parse_cli_args(); + $this->_set_uri_string($this->_parse_cli_args()); return; } // Let's try the REQUEST_URI first, this will work in most situations if ($uri = $this->_detect_uri()) { - $this->uri_string = $uri; + $this->_set_uri_string($uri); return; } @@ -80,51 +80,62 @@ class CI_URI { $path = (isset($_SERVER['PATH_INFO'])) ? $_SERVER['PATH_INFO'] : @getenv('PATH_INFO'); if (trim($path, '/') != '' && $path != "/".SELF) { - $this->uri_string = $path; + $this->_set_uri_string($path); return; } // No PATH_INFO?... What about QUERY_STRING? - $path = (isset($_SERVER['QUERY_STRING'])) ? $_SERVER['QUERY_STRING'] : @getenv('QUERY_STRING'); + $path = (isset($_SERVER['QUERY_STRING'])) ? $_SERVER['QUERY_STRING'] : @getenv('QUERY_STRING'); if (trim($path, '/') != '') { - $this->uri_string = $path; + $this->_set_uri_string($path); return; } // As a last ditch effort lets try using the $_GET array if (is_array($_GET) && count($_GET) == 1 && trim(key($_GET), '/') != '') { - $this->uri_string = key($_GET); + $this->_set_uri_string(key($_GET)); return; } // We've exhausted all our options... $this->uri_string = ''; + return; } - else - { - $uri = strtoupper($this->config->item('uri_protocol')); - if ($uri == 'REQUEST_URI') - { - $this->uri_string = $this->_detect_uri(); - return; - } - elseif ($uri == 'CLI') - { - $this->uri_string = $this->_parse_cli_args(); - return; - } + $uri = strtoupper($this->config->item('uri_protocol')); - $this->uri_string = (isset($_SERVER[$uri])) ? $_SERVER[$uri] : @getenv($uri); + if ($uri == 'REQUEST_URI') + { + $this->_set_uri_string($this->_detect_uri()); + return; } - - // If the URI contains only a slash we'll kill it - if ($this->uri_string == '/') + elseif ($uri == 'CLI') { - $this->uri_string = ''; + $this->_set_uri_string($this->_parse_cli_args()); + return; } + + $path = (isset($_SERVER[$uri])) ? $_SERVER[$uri] : @getenv($uri); + $this->_set_uri_string($path); + } + + // -------------------------------------------------------------------- + + /** + * Set the URI String + * + * @access public + * @return string + */ + function _set_uri_string($str) + { + // Filter out control characters + $str = remove_invisible_characters($str, FALSE); + + // If the URI contains only a slash we'll kill it + $this->uri_string = ($str == '/') ? '' : $str; } // -------------------------------------------------------------------- @@ -140,7 +151,7 @@ class CI_URI { */ private function _detect_uri() { - if ( ! isset($_SERVER['REQUEST_URI'])) + if ( ! isset($_SERVER['REQUEST_URI']) OR ! isset($_SERVER['SCRIPT_NAME'])) { return ''; } @@ -173,12 +184,12 @@ class CI_URI { $_SERVER['QUERY_STRING'] = ''; $_GET = array(); } - + if ($uri == '/' || empty($uri)) { return '/'; } - + $uri = parse_url($uri, PHP_URL_PATH); // Do some final cleaning of the URI and return it @@ -240,7 +251,7 @@ class CI_URI { */ function _remove_url_suffix() { - if ($this->config->item('url_suffix') != "") + if ($this->config->item('url_suffix') != "") { $this->uri_string = preg_replace("|".preg_quote($this->config->item('url_suffix'))."$|", "", $this->uri_string); } @@ -274,7 +285,7 @@ class CI_URI { * Re-index Segments * * This function re-indexes the $this->segment array so that it - * starts at 1 rather than 0. Doing so makes it simpler to + * starts at 1 rather than 0. Doing so makes it simpler to * use functions like $this->uri->segment(n) since there is * a 1:1 relationship between the segment array and the actual segments. * @@ -312,7 +323,7 @@ class CI_URI { * Fetch a URI "routed" Segment * * This function returns the re-routed URI segment (assuming routing rules are used) - * based on the number provided. If there is no routing this function returns the + * based on the number provided. If there is no routing this function returns the * same result as $this->segment() * * @access public @@ -414,7 +425,7 @@ class CI_URI { $i = 0; $lastval = ''; - $retval = array(); + $retval = array(); foreach ($segments as $seg) { if ($i % 2) diff --git a/system/core/Utf8.php b/system/core/Utf8.php index 5d5a7ef72..738d7e9d8 100644 --- a/system/core/Utf8.php +++ b/system/core/Utf8.php @@ -1,4 +1,4 @@ -<?php if ( ! defined('BASEPATH')) exit('No direct script access allowed'); +<?php if ( ! defined('BASEPATH')) exit('No direct script access allowed'); /** * CodeIgniter * @@ -107,7 +107,7 @@ class CI_Utf8 { */ function safe_ascii_for_xml($str) { - return preg_replace('/[\x00-\x08\x0B\x0C\x0E-\x1F\x7F]+/S', '', $str); + return remove_invisible_characters($str, FALSE); } // -------------------------------------------------------------------- |